Last updated: 21 August 2026


Tyler Channell

Tyler is the CEO of Newsletter Glue and a longtime fan of the product, having worked with its codebase across 100+ publishers at PaywallProject.

Newsletter Glue now sends your emails too. No Mailchimp, no ConvertKit, no separate email service provider (ESP) required.

If you’re a long-time Newsletter Glue customer, you know how convenient it is to build and send newsletters directly from WordPress. However, Newsletter Glue has always required a 3rd party email service provider like MailChimp or ActiveCampaign to handle the sending aspect of things. Today changes that!

Newsletter Glue now includes a built-in sending engine. Write your post, style your newsletter, hit publish, and it goes straight to your subscribers without the need for a 3rd party newsletter sending service.


Why we built this

Newsletter Glue has always solved half the problem: turning WordPress posts into newsletters without leaving the editor. But the send itself still depended on a third-party ESP sitting behind the scenes, another vendor, another price tag, another point of failure.

Publishers told us the same thing over and over: “I just want this to be one tool.”

So we built one.

Our native sending engine was designed specifically for WordPress publishers, not repurposed from a general-purpose marketing platform. That means the sending experience is built around the thing publishers actually do: turn editorial content into email, on a schedule, at scale, without a marketing team standing behind it.


What you get

One tool instead of two. Your subscriber list, your editor, and your sending infrastructure all live in the same place. No syncing lists between WordPress and an external ESP, no wondering which one has the “real” numbers.

One bill instead of two. Drop the separate 3rd-party newsletter sending subscription. Newsletter Glue ESP replaces it outright.

Fewer failure points. Every integration between two systems is a place where something can quietly break — a webhook that stops firing, an API key that expires, a sync that silently drops subscribers. Native sending removes that seam entirely.

Built for publishers, not marketers. Glueey ESP is designed around editorial workflows: posts becoming newsletters, on deadline, without needing to think about email as a separate discipline.

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The only Gutenberg-native email editor, now paired with the send. You’re already building your newsletter in the block editor. Now the same tool gets it into inboxes.


How it works and why Newsletter Glue ESP is different

The Newsletter Glue email service engine was built differently than other WordPress-based email plugins. Let’s assume you have a large list of subscribers. Sending through other systems relies on your web server to handle the sending. No problem, right? Well, not if you have a sizeable list. Relying on your web server to handle sending execution can cause your site to slow down significantly, especially on shared hosting services, causing links within your newsletter back to your site to be unreachable.

With the Newsletter Glue email service engine, all sending is handled through our sending infrastructure. We never rely on your web host to send newsletters. You can freely send millions of newsletters without worrying about your web server.


Do you have to switch?

You’re not locked out of anything you’re already using. Mailchimp, Kit, ActiveCampaign, Sendy, and the other ESPs Newsletter Glue connects to are all still supported, and your existing setup keeps working exactly as it does today.

But if you’re ready to drop the extra vendor, moving over is easier than you’d think. Newsletter Glue’s white-glove migration service handles this for you.


Who this is for

If any of these sound familiar, it’s worth a look:

  • You’re paying for an email service provider mainly to send what Newsletter Glue already builds
  • You’d rather manage everything in one place
  • You’re a local news publisher or small editorial team without a dedicated email specialist
  • You want to reduce your sending cost

The bottom line

Newsletter Glue already solved the building half of newsletters. Newsletter Glue ESP solves the sending half — without asking you to bring in another vendor to do it.

Try Newsletter Glue ESP →


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